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p- Block Elements — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryp- Block Elements1 Mark
MCQ
Which of the following gas is mono-atomic?
  • A
    Chlorine
  • ✓
    Helium
  • C
    Nitrogen
  • D
    Oxygen
✓

Answer

Correct option: B.
Helium
B

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